chat rooms are known for harboring married people looking
for sex on the side. Generally, the single babe or guy has no problems with fucking a married person since if they are in chat rooms - both are losers.

Hi: my name is marshall
Hi: my name is robin
hi robin, can I come over and ass fuck you.
sure you can - I love married cock and adultery is just temporary love.

The modern definition of Adultery sex with someone other than your spouse where you lie to and say you didn't have sex with them.
But if you do have sex with someone else and let your spouse know about it or what people call swinging ,it's not adultery.